28690425

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{4397}}^1$

素因数の和:4442

約数の個数: 36

約数和(自身を含む): 53171820

約数和(自身を除く): 24481395

約数列:

[1, 3, 5, 9, 15, 25, 29, 45, 75, 87, 145, 225, 261, 435, 725, 1305, 2175, 4397, 6525, 13191, 21985, 39573, 65955, 109925, 127513, 197865, 329775, 382539, 637565, 989325, 1147617, 1912695, 3187825, 5738085, 9563475, 28690425]

約数ペア:

[(1, 28690425), (3, 9563475), (5, 5738085), (9, 3187825), (15, 1912695), (25, 1147617), (29, 989325), (45, 637565), (75, 382539), (87, 329775), (145, 197865), (225, 127513), (261, 109925), (435, 65955), (725, 39573), (1305, 21985), (2175, 13191), (4397, 6525)]